Operational magnetic amplifiers with multiple control windings

ALTHOUGH a great deal of effort has been expended in the development of analyses of magnetic amplifiers, a completely satisfactory mathematical representation of this dynamic operation, characterized by the soundness of its mathematical basis and by the convenience of its application in analysis and synthesis, has yet to appear. Because of the discrete nature of the operation, the input and output of the magnetic amplifier must be expressed in terms of discrete functions whose variable is the number of half-cycles of the supply voltage frequency. As a result, the dynamic operation must be described by a difference equation which relates input and output.